What paint works on basement concrete or block walls?

Short answer

Fix water problems first, then use a masonry primer and a paint made for concrete and block, such as a masonry waterproofing coating or an acrylic masonry paint. Regular wall paint on damp concrete will blister and peel. White powder (efflorescence) must be scrubbed off before painting.

Before you paint

Tape a square of plastic to the wall for a day or two. Moisture under it means water is coming through, so address grading, gutters or drainage first.
Wire brush and clean off efflorescence and loose material.
Patch cracks with a masonry patch.

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Updated September 2026. Always follow the directions on your product's label; manufacturer instructions come first.